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Binh Nguyen Basic Electrical Theory February 3, 2022, 1:32 pm
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Yeah? Well, how do you know? What should they be? What are the outdoor and return air temperatures? What SEER rating is the equipment? These are the questions I ask every single time a technician says the phrase, “But the pressures look good for [insert refrigerant of choice here].” When they can’t answer the questions […]
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Michael Housh from Housh Home Energy in Ohio wrote this tip to help techs determine the air-side charge on a pressure tank. Thanks, Michael! Determining the air-side charge of an expansion tank in a hydronic heating system is a relatively easy task. A properly sized and charged tank is designed to keep the system pressure […]
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If you work in large commercial offices or mixed-use buildings, you almost certainly work with VAV systems regularly. If you aren't familiar with VAV, this is a quick intro to the basics so that they won't seem so overwhelming. VAV stands for variable air volume; this means that the AHU (air handling unit) can vary […]
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